bug#30522: offloading requires guile-readline on the remote system

[ludo@gnu.org (Ludovic Courtès)]

Hi Marius,

Marius Bakke <mbakke@fastmail.com> skribis:

> After reconfiguring a remote machine on latest 'master' (post recent
> core-updates merge), I found that offloading to it would just "hang".
>
> After some debugging I found that `guile --listen` failed to import
> (ice-9 readline).  Installing guile-readline for the offload user did
> the trick.

Could it be that ~/.guile on that machine imports (ice-9 readline)?
(On GuixSD the default ~/.guile used to import it unconditionally.)

Otherwise I see no reason why things would go wrong.  For instance, this
appears to work fine:

--8<---------------cut here---------------start------------->8---
$ ./pre-inst-env guix environment --ad-hoc guile -C -- guile --listen
substitute: updating list of substitutes from 'https://berlin.guixsd.org'... 100.0%
substitute: updating list of substitutes from 'https://mirror.hydra.gnu.org'... 100.0%
The following derivations will be built:
   /gnu/store/5y0fr7fbmpvbry09ks7i0fqaqvrl2yjn-profile.drv
   /gnu/store/ffp06ykw5qjlj3c2drys30nf73lgf6h4-info-dir.drv
   /gnu/store/209l6232jpic6cj90ijss2122xz743ia-fonts-dir.drv
   /gnu/store/1hj38jwa8bhkgwxxhrflbaslkql37db5-ca-certificate-bundle.drv
   /gnu/store/3hk4zjhl5g3i94yfdw5mzmbyhfrwqwxx-manual-database.drv
Creating manual page database...
1 entries processed in 0.1 s
GNU Guile 2.2.3
Copyright (C) 1995-2017 Free Software Foundation, Inc.

Guile comes with ABSOLUTELY NO WARRANTY; for details type `,show w'.
This program is free software, and you are welcome to redistribute it
under certain conditions; type `,show c' for details.

Enter `,help' for help.
scheme@(guile-user)> +
$1 = #<procedure + (#:optional _ _ . _)>
scheme@(guile-user)> -
$2 = #<procedure - (#:optional _ _ . _)>
--8<---------------cut here---------------end--------------->8---

Thanks,
Ludo’.